/* Component Styles - 组件样式 */

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Fade In Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Slide Up Animation */
.slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease-out forwards;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Gradient Border */
.gradient-border {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: var(--bg-gradient);
    border-radius: inherit;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    -webkit-mask-composite: xor;
}

/* Floating Animation */
.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Pulse Animation */
.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}

/* Glow Effect */
.glow {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 0 20px rgba(102, 126, 234, 0.5); }
    to { box-shadow: 0 0 30px rgba(102, 126, 234, 0.8); }
}

/* Text Shimmer Effect */
.shimmer {
    background: linear-gradient(90deg, var(--text-secondary), var(--text-primary), var(--text-secondary));
    background-size: 200% 100%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Hover Scale Effect */
.hover-scale {
    transition: transform var(--transition-normal);
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* Hover Lift Effect */
.hover-lift {
    transition: all var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Badge Component */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    background: var(--bg-gradient);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-secondary {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* Progress Bar */
.progress {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--bg-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

/* Tooltip */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-xs);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: 115%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--bg-card);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.tooltip:hover::before,
.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

/* Accordion */
.accordion {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
}

.accordion-item {
    border-bottom: 1px solid var(--border-color);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    padding: var(--space-4) var(--space-6);
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    font-weight: var(--font-medium);
    transition: background-color var(--transition-fast);
}

.accordion-header:hover {
    background: rgba(102, 126, 234, 0.1);
}

.accordion-icon {
    transition: transform var(--transition-fast);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.accordion-item.active .accordion-content {
    max-height: 200px; /* Adjust based on content */
}

.accordion-body {
    padding: 0 var(--space-6) var(--space-4);
    color: var(--text-secondary);
}

/* Tabs */
.tabs {
    width: 100%;
}

.tab-list {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-6);
}

.tab-button {
    padding: var(--space-3) var(--space-6);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
}

.tab-button:hover {
    color: var(--text-primary);
}

.tab-button.active {
    color: var(--text-accent);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--bg-gradient);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 50px;
    height: 50px;
    background: var(--bg-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-primary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

/* Notification */
.notification {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-6);
    max-width: 400px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    z-index: var(--z-popover);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left: 4px solid #10b981;
}

.notification.error {
    border-left: 4px solid #ef4444;
}

.notification.warning {
    border-left: 4px solid #f59e0b;
}

.notification.info {
    background: rgba(59, 130, 246, 0.1);
    border-color: #3b82f6;
    color: #3b82f6;
}

/* Episodes Section Styles */
.episodes-section {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
}

.episodes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.episode-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.episode-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.episode-card:hover::before {
    opacity: 1;
}

.episode-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-gradient);
    color: white;
    border-radius: var(--radius-full);
    font-weight: var(--font-bold);
    font-size: var(--font-lg);
    margin-bottom: var(--space-4);
}

.episode-content {
    flex: 1;
}

.episode-title {
    font-size: var(--font-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    line-height: 1.3;
}

.episode-description {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    line-height: 1.5;
    margin-bottom: var(--space-4);
}

.episode-link {
    font-size: var(--font-sm);
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    display: inline-block;
}

.episodes-cta {
    text-align: center;
    margin-top: var(--space-8);
}

.episodes-note {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    font-style: italic;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-md);
    margin-bottom: var(--space-2);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

/* Episodes Section Responsive */
@media (max-width: 768px) {
    .episodes-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .episode-card {
        padding: var(--space-4);
    }
    
    .episode-number {
        width: 35px;
        height: 35px;
        font-size: var(--font-md);
    }
    
    .episode-title {
        font-size: var(--font-md);
    }
}